/
udp.go
36 lines (33 loc) · 1.26 KB
/
udp.go
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/*
* NETCAP - Traffic Analysis Framework
* Copyright (c) 2017 Philipp Mieden <dreadl0ck [at] protonmail [dot] ch>
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package encoder
import (
"github.com/dreadl0ck/netcap/types"
"github.com/golang/protobuf/proto"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
)
var udpEncoder = CreateLayerEncoder(types.Type_NC_UDP, layers.LayerTypeUDP, func(layer gopacket.Layer, timestamp string) proto.Message {
if udp, ok := layer.(*layers.UDP); ok {
return &types.UDP{
Timestamp: timestamp,
SrcPort: int32(udp.SrcPort),
DstPort: int32(udp.DstPort),
Length: int32(udp.Length),
Checksum: int32(udp.Checksum),
PayloadEntropy: Entropy(udp.Payload),
PayloadSize: int32(len(udp.Payload)),
}
}
return nil
})